TY  - BOOK
AU  - Biber, Douglas
TI  - Variation across speech and writing
SN  - 0 521 32071 2
U1  - 001.54 
PY  - 1988///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Written Communication
KW  - Oral Communication
KW  - Language And Languages--Variation
ER  -